Question on on (Release) reaction

please see this site: http://www.hangar17.net/hxvii/hx.asp

when you press on contact, about, work, etc, there will be a button right at the bottom that will lead you back to the front og the flash movie.

How does the button at the bottom react when you press on the menu buttons? ( as soon as you go to an info section, the bottom button will appear as “back”)